You may wonder what all the fuss is about exercise. Simply put, inactivity is hazardous to your health. Physical activity can help you prevent chronic disease, manage your weight, and stay mentally fit. The best news is that it's never too late to adopt a more active lifestyle.

Chronic obstructive pulmonary disease (COPD) is a name given to a group of diseases that limit the flow of air in and out of your lungs. COPD includes chronic bronchitis and emphysema. Long-time cigarette smoking is the most common cause of COPD.